5649660266240 has 144 divisors (see below), whose sum is σ = 14123126642688. Its totient is φ = 2161295904768.

The previous prime is 5649660266227. The next prime is 5649660266249. The reversal of 5649660266240 is 426620669465.

It is a happy number.

It is a super-2 number, since 2×5649660266240² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5649660266249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373968767 + ... + 373983873.

It is an arithmetic number, because the mean of its divisors is an integer number (98077268352).

Almost surely, 2^{5649660266240} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5649660266240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7061563321344).

5649660266240 is an abundant number, since it is smaller than the sum of its proper divisors (8473466376448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5649660266240 is a wasteful number, since it uses less digits than its factorization.

5649660266240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27854 (or 27840 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 56.

The spelling of 5649660266240 in words is "five trillion, six hundred forty-nine billion, six hundred sixty million, two hundred sixty-six thousand, two hundred forty".